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Finding the Fourth Proportional to 355,905.46, 491,149.58 and 194,760.54

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Solution

The fourth proportional to 355,905.46, 491,149.58 and 194,760.54 is: 268,769.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,905.46 : 491,149.58 = 194,760.54 : x
  2. Step 2: Convert to fraction form
    355,905.46/491,149.58 = 194,760.54/x
  3. Step 3: Cross multiply
    355,905.46x = 491,149.58 × 194,760.54
  4. Step 4: Simplify right side
    355,905.46x = 95,656,557,421.57
  5. Step 5: Solve for x
    x = 95,656,557,421.57/355,905.46
  6. Step 6: Final answer
    x = 268,769.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.